\documentclass[12pt]{article}
\usepackage{Qcircuit_v2, Qcircuit_extension}
\begin{document}



last bit on top=False, time dir= $>$

\begin{equation}
\begin{array}{c}
\Qcircuit @C=2em @R=.4em {
% bit 0
&\lstick{\ket{0}}		% gate 0
&\qw		% gate 1
&\qw		% gate 2
&\timesgate		% gate 3
&\qw		% gate 4
&\qw		% gate 5
&\qw		% gate 6
&\qw		% gate 7
&\gate{Z}		% gate 8
&\timesgate		% gate 9
&\qw		% gate 10
\\  % bit 1
&\lstick{\ket{0}}		% gate 0
&\qw		% gate 1
&\gate{H}		% gate 2
&\dotgate\qwx		% gate 3
&\timesgate		% gate 4
&\qw		% gate 5
&\qw		% gate 6
&\meter		% gate 7
&\cw\qwx		% gate 8
&\Cdotgate\qwx		% gate 9
&\cw		% gate 10
\\  % bit 2
&\lstick{\ket{0}}		% gate 0
&\gate{R}		% gate 1
&\qw		% gate 2
&\qw		% gate 3
&\dotgate\qwx		% gate 4
&\gate{H}		% gate 5
&\meter		% gate 6
&\cw		% gate 7
&\Cdotgate\qwx		% gate 8
&\cw		% gate 9
&\cw		% gate 10
}
\end{array}
\end{equation}


last bit on top=False, time dir= $<$

\begin{equation}
\begin{array}{c}
\Qcircuit @C=2em @R=.4em {
% bit 0
&\timesgate		% gate 0
&\gate{Z}		% gate 1
&\qw		% gate 2
&\qw		% gate 3
&\qw		% gate 4
&\qw		% gate 5
&\timesgate		% gate 6
&\qw		% gate 7
&\qw		% gate 8
&\qw		% gate 9
&{\ket{0}}		% gate 10
\\  % bit 1
&\Cdotgate\qwx		% gate 0
&\cw\qwx		% gate 1
&\Rmeter		% gate 2
&\qw		% gate 3
&\qw		% gate 4
&\timesgate		% gate 5
&\dotgate\qwx		% gate 6
&\gate{H}		% gate 7
&\qw		% gate 8
&\qw		% gate 9
&{\ket{0}}		% gate 10
\\  % bit 2
&\cw		% gate 0
&\Cdotgate\qwx		% gate 1
&\cw		% gate 2
&\Rmeter		% gate 3
&\gate{H}		% gate 4
&\dotgate\qwx		% gate 5
&\qw		% gate 6
&\qw		% gate 7
&\gate{R}		% gate 8
&\qw		% gate 9
&{\ket{0}}		% gate 10
}
\end{array}
\end{equation}


last bit on top=True, time dir= $>$

\begin{equation}
\begin{array}{c}
\Qcircuit @C=2em @R=.4em {
% bit 0
&\lstick{\ket{0}}		% gate 0
&\gate{R}		% gate 1
&\qw		% gate 2
&\qw		% gate 3
&\dotgate		% gate 4
&\gate{H}		% gate 5
&\meter		% gate 6
&\cw		% gate 7
&\Cdotgate		% gate 8
&\cw		% gate 9
&\cw		% gate 10
\\  % bit 1
&\lstick{\ket{0}}		% gate 0
&\qw		% gate 1
&\gate{H}		% gate 2
&\dotgate		% gate 3
&\timesgate\qwx		% gate 4
&\qw		% gate 5
&\qw		% gate 6
&\meter		% gate 7
&\cw\qwx		% gate 8
&\Cdotgate		% gate 9
&\cw		% gate 10
\\  % bit 2
&\lstick{\ket{0}}		% gate 0
&\qw		% gate 1
&\qw		% gate 2
&\timesgate\qwx		% gate 3
&\qw		% gate 4
&\qw		% gate 5
&\qw		% gate 6
&\qw		% gate 7
&\gate{Z}\qwx		% gate 8
&\timesgate\qwx		% gate 9
&\qw		% gate 10
}
\end{array}
\end{equation}


last bit on top=True, time dir= $<$

\begin{equation}
\begin{array}{c}
\Qcircuit @C=2em @R=.4em {
% bit 0
&\cw		% gate 0
&\Cdotgate		% gate 1
&\cw		% gate 2
&\Rmeter		% gate 3
&\gate{H}		% gate 4
&\dotgate		% gate 5
&\qw		% gate 6
&\qw		% gate 7
&\gate{R}		% gate 8
&\qw		% gate 9
&{\ket{0}}		% gate 10
\\  % bit 1
&\Cdotgate		% gate 0
&\cw\qwx		% gate 1
&\Rmeter		% gate 2
&\qw		% gate 3
&\qw		% gate 4
&\timesgate\qwx		% gate 5
&\dotgate		% gate 6
&\gate{H}		% gate 7
&\qw		% gate 8
&\qw		% gate 9
&{\ket{0}}		% gate 10
\\  % bit 2
&\timesgate\qwx		% gate 0
&\gate{Z}\qwx		% gate 1
&\qw		% gate 2
&\qw		% gate 3
&\qw		% gate 4
&\qw		% gate 5
&\timesgate\qwx		% gate 6
&\qw		% gate 7
&\qw		% gate 8
&\qw		% gate 9
&{\ket{0}}		% gate 10
}
\end{array}
\end{equation}

\end{document}